JP5590004B2 - Rectification stand for solar power generation panel - Google Patents

Description

The present invention relates to a rectification stand for a photovoltaic power generation panel.

2. Description of the Related Art Conventionally, in a photovoltaic power generation panel provided on a roof, a pedestal or the like of a house, dirt, bird droppings and chemical substances (dust) adhere to the panel surface. Since these deposits do not fall due to rain alone, cleaning and maintenance are required, but the work is difficult. In order to cope with this, for example, Patent Document 1 proposes cleaning the panel surface using a cleaning device capable of working at high places.

Furthermore, since the power generation capacity decreases when the photovoltaic power generation panel becomes high temperature, cooling is performed by flowing cold water over the panel surface. For example, Patent Document 2 discloses a watering facility that prevents a temperature increase associated with photovoltaic power generation by watering the panel surface.

JP 2011-40592 A JP 2010-129677 A

However, the conventional photovoltaic power generation panel has the following problems.
That is, in a photovoltaic power generation panel supported by a conventional gantry, as shown in FIG. 7, for example, when wind E blows from the back of panel 100 (right side in FIG. 7), wake vortex U is generated on the leeward side. As a result, a negative pressure is generated in the upper part of the panel, and there is a problem that the lifting force P acts on the panel 100 and the panel 100 itself or the frame 101 is lifted.
Moreover, when cleaning the panel surface using the cleaning apparatus of patent document 1, it is necessary to use a special cleaning apparatus, and there existed room for improvement in that point.
Furthermore, in Patent Document 2, a special cooling device is required, and it is difficult to secure water supplied to the cooling device, and power for operating the device is required. In addition, in this case, there is a problem that the power generation efficiency is lowered due to the formation of a water film on the panel surface.

The present invention has been made in view of the above-described problems, and prevents the wake-side wake vortex from being generated and prevents the negative pressure from being generated at the top of the panel, thereby preventing the photovoltaic power generation panel from being lifted. It aims at providing the rectification stand for photovoltaic power generation panels which can do.
Another object of the present invention is to reduce the trouble of cleaning the panel surface and to cool the panel surface with a simple configuration and prevent a decrease in power generation efficiency without providing a special cooling facility. It is to provide a rectification stand for a photovoltaic power generation panel.

In order to achieve the above object, the photovoltaic panel rectifier according to the present invention is a photovoltaic panel rectifier provided in the photovoltaic panel, and extends from the upper part of the panel toward the lower rear side of the panel. The first wind shield and at least one of the wind shields are provided on the upper side of the panel, and are arranged at a distance from the wind shield surface of the first wind shield and pass between the first wind shield and the air. Are arranged on the first rectifying plate located on the panel upper side of the first rectifying plate, the first rectifying plate arranged to move upward along the first wind shielding plate, And a blowout port that discharges air from behind the panel guided along the panel surface.

In the present invention, when wind blows from behind the photovoltaic power generation panel, air flows between the first wind shielding plate and the first rectifying plate provided on the upper side of the panel, which is the windward side. 1 Flows along the wind shield toward the outlet. That is, the wind from the rear is collected by the first wind shielding plate and the first rectifying plate, and the air is blown out as a forced wind toward the panel surface from the outlet. Then, air flows along the panel surface toward the lower side.
Further, when wind blows from the front of the photovoltaic power generation panel, the air flows upward along the panel surface, flows into the outlet provided on the upper side of the panel, and the first windshield and the first windshield It will be discharged to the rear of the panel after passing between the current plate. That is, by providing the outlet, air easily flows along the panel surface, and this passing air becomes a forced air.

Thus, by forcibly sending air from the leeward side to the leeward side on the panel surface, wake vortices are less likely to occur on the leeward side, and vortices are less likely to adhere to the panel surface. Therefore, the negative pressure at the upper part of the panel is reduced, and the floating of the panel itself or the gantry supporting the panel can be suppressed.
Further, by providing the first rectifying plate, a downward force (down force) is generated in the rectifying plate itself due to the pressure difference of the air passing through the upper and lower surfaces of the rectifying plate. Accordingly, since the photovoltaic power generation panel is pressed downward by the rectifying plate via the gantry, the panel itself or the cradle can be more reliably suppressed from being lifted.

In addition, by blowing forced air on the panel surface, it is possible to blow off dirt such as dirt and dust on the surface, and it is possible to prevent air from stagnating on the panel surface, so that dirt is removed. There is an advantage that it is difficult to adhere.
Furthermore, by blowing forced air on the panel surface, it is possible to suppress a temperature rise during power generation of the photovoltaic power generation panel, and to improve power generation efficiency.

Moreover, in the rectifying stand for photovoltaic power generation panels according to the present invention, the second wind shielding plate extending from the lower portion of the panel toward the panel lower side, and the downward direction with respect to the wind shielding surface of the second wind shielding plate. It is preferable to provide the 2nd baffle plate arrange | positioned so that it may open.

In this invention, when a wind blows from the back of a photovoltaic power generation panel, the air will be blown off as a forced wind toward the panel surface from a blower outlet. And the air which circulated toward the lower side along the panel surface passes between the 2nd wind shield plate and the 2nd current plate which are provided in the panel lower side which becomes the leeward side, and goes to the panel front. Will be released. In addition, when wind blows from the front of the photovoltaic power generation panel, the air passes between the second wind shielding plate and the second rectifying plate provided on the lower side of the panel, and is forced toward the panel surface. The air blown out and circulated upward along the panel surface flows into the blowout port, passes between the first wind shielding plate and the first rectifying plate, and is discharged to the rear of the panel.

In addition, by blowing forced air on the panel surface with the air that has passed between the second windshield plate and the second rectifying plate, it becomes possible to blow off dirt such as dirt and dust attached to the surface, Since it is possible to prevent air from stagnating on the panel surface portion, there is an advantage that dirt hardly adheres.
Furthermore, by blowing forced air on the panel surface, it is possible to suppress a temperature rise during power generation of the photovoltaic power generation panel, and to improve power generation efficiency.
Furthermore, by providing the second rectifying plate, a downward force (down force) is generated in the rectifying plate itself due to the pressure difference of the air passing through the upper and lower surfaces of the second rectifying plate. Accordingly, since the photovoltaic power generation panel is pressed downward by the rectifying plate via the gantry, the panel itself or the cradle can be more reliably suppressed from being lifted.

Moreover, in the rectifying stand for photovoltaic power generation panels according to the present invention, it is preferable that a plurality of the first rectifying plates are arranged at intervals.

In the present invention, by providing a plurality of first rectifying plates to the first wind shielding plate, when the wind is received from behind the photovoltaic power generation panel, the wind passing between the first rectifying plates is prevented from being generated by the first shielding plate. It can collect so that it may flow to the blower outlet side along the wind-shielding surface of a wind plate. That is, more wind can be collected by these plurality of rectifying plates and blown from the outlet.

Moreover, in the rectifying stand for photovoltaic power generation panels according to the present invention, it is preferable that the first wind shielding plate is provided so as to close the back space of the photovoltaic power generation panel.

In this invention, since the flow of the wind to the back side space of a photovoltaic power generation panel can be decreased by the 1st windshield, it can suppress that the positive pressure by a wind is applied to the panel back surface. That is, the first wind shield has an effect of guiding the wind from the rear to the outlet side so as not to flow into the back space of the panel.

According to the rectifying stand for the photovoltaic power generation panel of the present invention, the first rectifying plate and the first wind shielding plate are provided on the upper side of the panel to collect the wind from the rear of the panel and actively distribute the air to the panel surface. Thus, it is possible to prevent the wake vortex on the leeward side of the panel from being generated, to suppress the generation of negative pressure at the upper part of the panel, and to prevent the photovoltaic power generation panel from being lifted.
Also, at least when wind is blowing, air can flow constantly on the panel surface to prevent stagnation of the air, so that adhesion of dirt, dust, etc. can be reduced, and the panel surface needs to be cleaned. Time and effort can be reduced.
Moreover, according to the photovoltaic power generation panel mount of the present invention, no special cooling facility is required, and it is possible to cool the panel surface with a simple configuration and prevent a decrease in power generation efficiency.

It is a perspective view which shows the structure of the rectification | straightening stand with which the solar power generation panel by the 1st Embodiment of this invention was equipped. It is the perspective view which looked at the rectification stand shown in FIG. 1 from the rear side. It is a side view which shows the structure of a rectification stand. It is a side view which shows the flow of the air by a rectifying stand, Comprising: (a) is a case where a wind blows from back, (b) is a case where a wind blows from the front. It is a side view which shows the structure of the rectification | straightening stand with which the solar power generation panel by 2nd Embodiment was equipped. It is a side view which shows the flow of the air of the rectifying stand of FIG. 5, Comprising: (a) is a case where a wind blows from back, (b) is a case where a wind blows from the front. It is a side view which shows the flow of the air with respect to the conventional photovoltaic power generation panel.

Hereinafter, a rectifying stand for a photovoltaic power generation panel according to an embodiment of the present invention will be described with reference to the drawings.

(First embodiment)
As shown in FIG. 1, the rectification stand for photovoltaic power generation panels according to the present embodiment (hereinafter simply referred to as the rectification gantry 1) is connected to a gantry body 3 that supports the photovoltaic power generation panel 2 from below via a connecting member (not shown). Is provided.
The photovoltaic power generation panel 2 is disposed obliquely with the panel surface 2a forming the light receiving surface facing south. Here, in the installation state in FIG. 1, the panel back surface 2b side is referred to as “rear side” and “rear side”, and the panel surface 2a side is referred to as “front side” and “front side”.

  As shown in FIGS. 1 to 3, the gantry body 3 has a configuration in which an H-shaped steel material, a channel steel material (channel steel material), and the like are combined, and a base 31 provided on the installation surface and sunlight on the base 31. A support plate 32 that is substantially parallel to the installation angle of the power generation panel 2 and is disposed obliquely rearward, and a diagonal member 33 that is disposed obliquely forward and supports the upper portion of the support plate 32 are provided. The support plate 32 and the diagonal member 33 are configured such that their upper ends are joined to each other and their lower ends are fixed to the base 31. Here, the joint between the support plate 32 and the diagonal member 33 is referred to as an upper corner 3a (FIG. 3).

  As shown in FIGS. 1 to 3, the rectifying stand 1 includes a first wind shielding plate 4 extending from the upper portion of the panel toward the lower rear side of the panel, and a wind shielding surface 4 a facing the rear of the first wind shielding plate 4. The air E passing between the first wind shield plate 4 and the first wind shield plate 4 is arranged so as to move upward along the first wind shield plate 4 (here, 4). Are provided on the first rectifying plate 5 (5A, 5B, 5C, 5D) and the first rectifying plate 5 located on the upper side of the panel (hereinafter referred to as “the uppermost rectifying plate 5A” if necessary) A blowout port 6 that discharges air E from the rear of the panel guided along the first wind shield 4 so as to flow along the panel surface 2a, and a second shield that extends from the lower portion of the panel toward the lower side of the panel. The second windshield plate is spaced apart from the windshield 7 and the windshield surface 7a on the front side of the second windshield plate 7. It is schematically configured to include the second rectifying plate 8 disposed so as to open toward the lower side with respect Saegikazemen 7a, the.

  The first wind shielding plate 4 is provided so as to close the back space R of the gantry body 3, the upper end 4 b is fixed to the upper corner 3 a of the gantry body 3, and extends downward along the diagonal member 33. The lower end 4c is curved backward.

  The first rectifying plates 5 (5A, 5B, 5C, 5D) each have a blade shape that extends along the width direction X of the photovoltaic power generation panel 2 and has a streamlined lower surface side. Arranged at intervals along the wind surface 4a in the vertical direction, the rectifying plates 5B to 5D excluding the uppermost rectifying plate 5A are gradually turned upward along the first wind shielding plate 4 toward the lower part. Is arranged. The uppermost rectifying plate 5 </ b> A is disposed with a spacing immediately above the upper corner 3 a of the gantry body 3. Each of the four first rectifying plates 5 (5A to 5D) is appropriate so that the air E can easily flow upward (on the outlet 6 side) along the wind shielding surface 4a of the first wind shielding plate 4. It is set to an angle.

  The outlet 6 is a plate-like member that is disposed substantially parallel to the panel surface 2a at the same inclination angle as that of the photovoltaic power generation panel 2 and protrudes forward from the uppermost rectifying plate 5A. Thus, it is provided integrally. That is, the outlet 6 is configured to be able to blow out the air E flowing from the rear side toward the panel surface 2a.

  The second wind shield 7 is connected to the lower end portion of the photovoltaic power generation panel 2 and is curved forward along the base 31. On the side of the wind shielding surface 7a facing the front side of the second wind shielding plate 7, the second rectifying plate 8 is arranged with a predetermined inclination angle with respect to the wind shielding surface 7a. Specifically, the second rectifying plate 8 has the same shape as the first rectifying plate 5, and the front end 8 a side thereof is open forward with respect to the second wind shielding plate 7.

For the members of the rectifying gantry 1 described above (the first wind shielding plate 4, the first rectifying plate 5, the second wind shielding plate 7, the second rectifying plate 8), for example, a member such as an iron plate, plastic, or synthetic resin is adopted. Can do.

Next, the effect | action of the rectifying stand 1 mentioned above is demonstrated in detail based on drawing.
As shown to Fig.4 (a), when a wind blows from the back of the photovoltaic power generation panel 2, the 1st baffle plate 4 and the 1st baffle plate 5 (5A ~ 5) provided in the panel upper side used as an upwind side are used. 5D), the air E flows in, and the air E flows along the first wind shielding plate 4 toward the outlet 6 side. That is, the wind from the rear side is collected by the first wind shielding plate 4 and the first rectifying plate 5, and the air E is blown out from the blowout port 6 toward the panel surface 2 a as forced air. And the air E which passed toward the lower side along the panel surface 2a passes between the 2nd wind shield 7 and the 2nd baffle plate 8 provided in the panel lower part side used as the leeward side. It will be released to the front of the panel.

Moreover, as shown in FIG.4 (b), when the wind blows from the front of the photovoltaic power generation panel 2, the air E is provided with the second wind shielding plate 7 and the second rectifying plate 8 provided on the panel lower side. The air E is blown out as forced air toward the panel surface 2a. And the air E which distribute | circulated toward the upper side along the panel surface 2a flows into the blower outlet 6 provided in the panel upper side, passes between the 1st wind shield plate 4 and the 1st rectifier plate 5. Will be discharged to the rear of the panel. That is, the air E easily flows along the panel surface 2a, and this passing air becomes a forced air.

Thus, by forcibly sending air from the leeward side to the leeward side on the panel surface 2a, wake vortices on the leeward side are less likely to occur, and vortices are less likely to adhere to the panel surface 2a. Therefore, the negative pressure at the upper part of the panel is reduced, and lifting due to the negative pressure of the photovoltaic power generation panel 2 or the gantry body 3 can be suppressed.

Further, by providing the first rectifying plate 5 and the second rectifying plate 8, a downward force F (down force) is exerted on each rectifying plate 5, 8 itself due to a pressure difference of air passing through the upper and lower surfaces of the rectifying plates 5, 8. ) Will occur. Accordingly, since the photovoltaic power generation panel 2 is pressed downward by the rectifying plates 5 and 8 via the gantry body 3, the rising of the photovoltaic power generation panel 2 itself or the gantry body 3 can be more reliably suppressed. it can.

Further, by blowing forced air on the panel surface 2a, dirt such as dirt and dust attached to the surface 2a can be blown off, and air can be prevented from staying on the panel surface 2a. Therefore, there is an advantage that dirt is difficult to adhere.
Furthermore, by blowing forced air on the panel surface 2a, it is possible to suppress a temperature rise during power generation of the photovoltaic power generation panel 2, and to improve power generation efficiency.

Moreover, when receiving wind from the back of the photovoltaic power generation panel 2, the first rectifying plate 5 is provided by providing a plurality (four) of first rectifying plates 5 (5 </ b> A to 5 </ b> D) to the first wind shielding plate 4. The wind passing between the two can be collected so as to flow along the wind shielding surface 4 a of the first wind shielding plate 4 toward the outlet 6. That is, more winds can be collected by the plurality of first rectifying plates 5 and blown from the outlet 6.

Moreover, the 1st windshield 4 is provided so that the back side space R of the solar power generation panel 2 may be block | closed, and there is little flow of the wind to the back side space R of the solar power generation panel 2 by the 1st wind shield 4 Therefore, it is possible to prevent a positive pressure due to wind from being applied to the panel back surface 2b. That is, the first wind shielding plate 4 has an effect of guiding the wind from the rear to the outlet 6 so as not to flow to the back side of the panel 2 and flowing it to the panel surface 2a.

The opening size of the outlet 6 can be set arbitrarily, but when increasing the amount of air blown to the panel surface 2a, the opening amount of the outlet 6 is reduced to increase the air flow rate. Just do it.

In the rectification stand for a photovoltaic power generation panel according to the present embodiment described above, the first rectifying plate 5 and the first wind shielding plate 4 are provided on the upper side of the panel to collect wind from the rear of the panel, and the air E is collected from the panel surface 2a. By virtue of positive circulation, it is possible to prevent the wake vortex on the leeward side of the panel from being generated, to suppress the generation of negative pressure at the upper part of the panel, and to prevent the photovoltaic power generation panel 2 from being lifted.
Further, at least when the wind is blowing, the air always flows on the panel surface 2a and the stagnation of the air can be prevented, so that the adhesion of dirt and dust can be reduced, and the panel surface 2a is cleaned. Can be reduced.
In addition, no special cooling facility is required, and the panel surface 2a can be cooled with a simple configuration to prevent a decrease in power generation efficiency.

Next, other embodiments of the rectifying stand for photovoltaic power generation panels of the present invention will be described based on the attached drawings, but the same or similar members and parts as those of the first embodiment are the same. A description will be omitted using reference numerals, and a configuration different from that of the first embodiment will be described.

(Second Embodiment)
As shown in FIG. 5, the rectifying stand 1 </ b> A (rectifying stand for solar power generation) according to the second embodiment is applied to the solar power generation panel 2 installed on an inclined roof 34 of a building such as a house. In this case, two first rectifying plates 5 (5A, 5B) are provided, and sunlight is applied to the first inclined portion 34A on the south side of the mountain-shaped inclined roof 34 (left side from the roof top in FIG. 5) in a side view. The power generation panel 2 is provided, and the second inclined portion 34B on the opposite north side (on the right side from the roof top portion in FIG. 5) corresponds to the wind shield (first wind shield).
In addition, the 2nd wind shield 7 and the 2nd baffle plate 8 are provided in the panel lower part of the photovoltaic power generation panel 2 similarly to the said 1st Embodiment.

  In this case, the same operation and effect as the first embodiment described above are obtained. As shown to Fig.6 (a), when a wind blows from the back of the photovoltaic power generation panel 2, 34 A of 1st inclination parts and the 1st baffle plate 5 (5A, 5B) located in the panel upper side used as an upwind side are shown. The air E flows in between and flows toward the outlet 6 along the first inclined portion 34A. That is, wind from the rear is collected by the first inclined portion 34A and the first rectifying plate 5, and the air E is blown out from the blowout port 6 toward the panel surface 2a as forced air. And the air E which distribute | circulated toward the lower side along the panel surface 2a passes between the 2nd baffle plates 7 and the 2nd baffle plate 8 provided in the panel lower side used as a leeward side. It will be released to the front of the panel.

As shown in FIG. 6B, when wind blows from the front of the photovoltaic power generation panel 2, it passes between the second wind shielding plate 7 and the second rectifying plate 8 provided on the lower side of the panel. Then, the air E is blown out as a forced wind toward the panel surface 2a. And the air E which distribute | circulated toward the upper side along the panel surface 2a flows into the blower outlet 6 provided in the panel upper side, passes between the 1st inclination part 34A and the 1st baffle plate 5. It will be discharged to the rear of the panel.

In this way, on the panel surface 2a where the negative pressure is generated, by forcibly blowing air from the leeward side toward the leeward side, a wake vortex on the leeward side is less likely to be generated, and the vortex is further generated on the panel surface 2a. It becomes difficult to adhere. Therefore, the negative pressure at the upper part of the panel is reduced, and lifting due to the negative pressure of the photovoltaic power generation panel 2 or the gantry body 3 can be suppressed.

As mentioned above, although embodiment of the rectification stand for photovoltaic power generation panels by this invention was described, this invention is not limited to said embodiment, It can change suitably in the range which does not deviate from the meaning.
For example, in the embodiment described above, the second wind shielding plate 7 and the second rectifying plate 8 are provided on the lower side of the panel, but these may be omitted. In the absence of the second wind shielding plate 7 and the second rectifying plate 8, when the wind blows from the rear of the photovoltaic power generation panel 2, the air E flows downward along the panel surface 2a. When the wind blows from the front of the photovoltaic power generation panel 2, the air E that has passed upward along the panel surface 2a flows into the outlet 6 provided on the upper side of the panel, and the first wind shield. It passes between the board 4 and the 1st baffle plate 5, and is discharged | emitted to the panel back.

In the first embodiment, four first rectifying plates 5 are provided, and in the second embodiment, two are provided. However, the number is not limited to one, and one is provided. It doesn't matter. When one first rectifying plate 5 is provided, it may be provided on the upper side of the panel.
Furthermore, the first windshield plate and the second windshield plate may be configured to use the inclined portions 34A and 34B of the inclined roof 34 as in the second embodiment described above.
Furthermore, the configuration of the shape, material, orientation, and mounting position of the windshield plate and rectifying plate (the distance between the windshield plate and the rectifying plate, the arrangement interval between the rectifying plates), etc. It can be appropriately set according to conditions such as the shape of the main body 3, the shape of the roof, or the natural conditions (for example, a place where there is a lot of strong winds) of the panel mounting location.

In addition, it is possible to appropriately replace the components in the above-described embodiments with known components without departing from the spirit of the present invention.

1, 1A Rectification stand (Rectification stand for photovoltaic panels)
2 Photovoltaic power generation panel 2a Panel surface 2b Panel back surface 3 Base body 3a Upper corner 4 First wind shield 5, 5A to 5D First current plate 6 Air outlet 7 Second wind shield 8 Second current plate E Air R Space behind the panel

Claims (4)

A solar panel rectifier for a solar panel,
A first wind shield extending from the upper part of the panel toward the lower rear side of the panel;
At least one is provided on the upper side of the panel, and is disposed at a distance from the wind shield surface of the first wind shield, and air passing between the first wind shield and the first wind shield is passed through the first wind shield. A first rectifying plate arranged to move upward along the wind plate;
The first rectifying plate is provided on the first rectifying plate located on the upper side of the panel, and air from behind the panel guided along the first wind shielding plate is discharged so as to circulate along the panel surface. The outlet to do,
A rectifying stand for a photovoltaic power generation panel characterized by comprising: A second wind shield extending from the lower part of the panel toward the lower side of the panel;
A second rectifying plate disposed so as to open downward with respect to the wind shielding surface of the second wind shielding plate;
A rectifying stand for a photovoltaic power generation panel characterized by comprising:   The said 1st baffle plate is arranged in plurality mutually spaced apart, The rectification stand for photovoltaic power generation panels of Claim 1 or 2 characterized by the above-mentioned.   The said 1st windshield is provided so that the back side space of the said photovoltaic power generation panel may be block | closed, The rectification stand for photovoltaic power generation panels of any one of Claim 1 thru | or 3 characterized by the above-mentioned.

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